Spray gun



0. HUKARI May 24, 1938.

SPRAY GUN Filed Sept. 26, 1955 I [NI/ENTER I Ormand Huhari AT'TUR Patented May 24, 1938 UNITED STATES PATENT OFFICE 5 Claims.

My invention relates to-improvements in spraying heads. The spraying head is primarily used for the spraying of fruits and vegetables during the growing season.

The invention is comprised primarily of a barrel having a spray head removably secured to one end of the barrel. A body element is secured to the oppositely disposed end of the barrel and a stem runs longitudinally of the head of the barrel and of the body element. A stem is threadedly secured to the body element and a handle is fixedly secured to the stem so that the manipulation of the handle moves the stem longitudinally of the assembly. A conic shaped head is secured to the spraying head of the stem and the movement of the stem in one direction stops the flow of fluid through the spray head, likewise the movement of the stem in the opposite direction accomplishes a similar result.

The primary purpose and object of my'invention is to provide a device for use in the spraying of fruits and vegetables to arrest the development of undesirable growths within and upon the same.

A further object of my invention consists in so constructing the same that itwillbe sufiiciently light in weight to facilitate its being used with.- out undue fatigue when being used over long operating periods.

A further object of my invention consists in so constructing the same that it may be easily disassembled to facilitate the maintaining of the same in a clean and in a. highly workable con.- dition.

With these and incidental objects in view, the invention consists in certain novel features of construction and combination of parts, the essential elements of which are set forth in the appended claims, and "a preferred form of embodiment of which is hereinafter shown with reference to the drawing which accompanies and forms a part of this specification.

In the drawing:

Fig. 1 is a fragmentary sectional side view of the assembled device.

Fig. 2 is a fragmentary sectional side view of the assembled device.

Fig. 3 is a perspective end view of the adjustable head disposed at the discharge end of the device.

Like reference characters refer to like parts throughout the several views.

My device is primarily comprised of a cylindrical barrel l. A body element 2 is removably secured to one end of the barrel. The body element has a female connection 3 disposed at one side of the same to which a hose or other connection may be readily attached and to facilitate the delivery of a. fluid under pressure through the female connection directly into the body element and into the barrel I. A collar 4 is disposed upon. the opposite end of the barrel to that to which the body element 2 is attached. A head 5 is threadedly attached to the collar 4'. A nipple 6 is removably and. threadedly attached to the nozzle 5' and a discharge opening 1 is disposed central of the nipple 6. The nose or forward end of the head. has a face 8 that is disposed at right angles to that of the longitudinal axis of the head 5. andv a spraying disc 9 is placeable within the head. Az-compressible gasket I is dispose-d between the disc 9 and the face 8 of the head. and the adjustment of the nipple 6 maintains a tight working relationship between the disc 9, the gasket I0 and the face 8 of the head. The size of the opening ll disposed within the disc is determined, by the kind and. quality of the solution to be sprayed therethrough. and the fineness of the spray that is to emanate from the spraying device.

Since the. opening H is relatively small it is desirable to provide facilities for the easy removal of the disc and to exchange and replace the same within the desired diameter of the spraying orifice required for the work to be done. A stem. [2 runs longitudinally of. the barrel and connects the adjusting handle [3 with the adjustable head M. A band 15 is disposed about the outer periphery of the head l4 and gaskets I6 and 11- are disposed upon the oppositely disposed sides of the band I 5. The adjustable head M is threadedly attachable to the stem l2 and a locking nut 18. locks the adjustable head l4 in precise placement upon the stem 12. The inner surface IQ of the head converges toward the longitud nal axial center line of the head [4 and the surface 20 of the head M has a slope similar to that of the surface IQ of the nozzle 5. A shoulder 2| is disposed upon the inner surface of the nozzle 5' and the gasket l6 engages the shoulder 2i slightly in advance of the engagement of the sloping surfaces l9 and 20. A- gasket is also placed in line with the face 22 of the collar 4v to thereby shut off the flow of fluid through the spraying head when the nipple is moved sufliciently to cause contact with the gasket l1 and with the face 22.

The body element 2 is threaded upon its interior and the stern l2 has a threaded portion 23 that engages with the thread disposed within the body element 2. The handle I3 is fixedly secured to the stem l2 and as the handle is rotated the stem I2 is also rotated. The rotation of the thread 23 of the stem. within the threaded portion of the body element 2 imparts longitudinal movement to the stem I2. A spider 24 is disposed within the barrel and this precisely positions and maintains the stem in registry with the head l4 as the same is rotated.

In order that a swirl may be imparted to the fluid passing through the nozzle 5'I provide a plurality of notches or slits within and upon the face of the head, and the major portion of the fluid to be sprayed through the opening of the spraying disc has a swirl imparted thereto as it passes through the opening H of the disc 9.

The peripheral grooves 25 that are placed upon the outer surface of the conical head I4 7 may be made to run spirally around the conical head but terminating short of the point 20A. In doing this where precision fits are provided between the point of the conical head beyond the termination of the spiral groove and the inner surface 20B of the head 5 the flow of spraying fluid through the head may be entirely shut oil. This eliminates the necessity of forming a valve tight relationship between the shoulders 56 and 2!. While the valve shoulder shut-01f is satisfactory in the lower precisions I have found the precision fit disposed between the conical point 20A and the engaging surface 203 gives better results and longer life in the high pressures now in common use in many of the spraying operations required in treating fruit trees for coddling moth control and for fruit sprays during the dormant season for San Jose scale.

While the form of mechanism herein shown and described is admirably adapted to fulfill the objects primarily stated, it is to be understood that it is not intended to confine the invention to the embodiment herein shown and described, as it is susceptible of embodiment in various forms, all coming within the scope of the claims which follow.

What I claim is: v

1. A spray gun comprising a cylindrical barrel, a body element threadably secured to the cylindrical barrel, a female pipe connection disposed at one side of the body element and an opening disposed through the connection communicating with the interior of the body element, a collar secured to one end of the cylindrical barrel and at the opposite end to which the body element is attached, a head adjustably and threadably se cured to the collar, a nipple removably secured to the outer end of the head, a shoulder disposed upon the inner end of the nipple, a spraying apertured disc normally resting upon the shoulder disposed within the nipple and a compressible gasket disposed between the apertured disc and the outer end of the head, a stem extending longitudinally of the cylindrical barrel, an adjusting handle secured to the outer end of the stem, an adjustable pointed head secured to the opposite end of the stem, said pointed head having slits disposed spirally of the outer surface thereof and terminating short of the end, said pointed head when moved in one direction engaging the head and stopping the flow of fluid therethrough and said pointed head constructed for engagement with the collar secured to the cylindrical barrel when moved in the opposite direction to stop the flow of fluid through the head.

2. In a device of the class described, the combination of a body element, a thread disposed centrally of and extending longitudinally of the body element, a tubular barrel having a fixed head attached thereto secured to the body element, a stem disposed longitudinally of the body element and of the tubular barrel, and means for maintaining a screw thread engagement with the body element, an adjustable head carried by the stem and said adjustable head being adjustable relative to the fixed head, said adjustable head being adapted for closing a passageway through the fixed head when fully rotated in either direction, and a plurality of spiral grooves disposed about the outer lower surface of the adjustable head, a handle secured to the stem, means for admitting a fluid under pressure into the body element and a nipple open at its outer end and an orificed disc removably disposed between the fixed head and the nipple.

3. In a device of the class described, the combination of a fixed head and an adjustable head, means for conducting a fluid under pressure into the adjustable head, means for imparting a whirling motion to the fluid as the same passes through the adjustable head, an orificed disc disposed in spaced relation with the adjustable head with the orifice of the disc being in axial adjustment with the adjustable head, a stem to which the adjustable head is attached, means for rotating the stem, means for imparting a longitudinal movement to the stem and to the adjustable head when the stem is rotated in either direction and means for stopping the flow of fluid through the adjustable head when the stem is fully rotated in either direction.

4. In a device of the class described, the com bination of a barrel having a head threadably attached to one of its ends and a body element fixedly attached to the'other of its ends, a stem disposed longitudinally of the head and body element and having a handle secured thereto to permit the rotation of the stem, means for imparting a swirl to the materials flowing through the head, Within the head, an orificed disc removably secured to the head and means for shutting ofi the flow of fluid passing through the disc by imparting rotating movement in either direction to the handle and a spider for maintaining the stem in axial alignment with the barrel.

5. In a device of the class described, the combination of a stationary spraying head, means for admitting spraying solutions into the stationary head under pressure, an adjustable head positionable within the stationary head, means for moving the adjustable hea'd longitudinally in either direction, relative to the stationary head, notches spirally disposed about the surface of the face of the adjustable 'head, means for shutting off the passage of spraying solutions through the head by the movement of the adjustable head in either direction, disc having an orifice disposed centrally thereof removably attachable to the head and a nipple secured to the head and adapted for securing the orificed disc removably secured to the head.

ORMAND HUKARI. 

